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Akhigbe RE, Akhigbe TM, Oyedokun PA, Famurewa AC. Molecular mechanisms underpinning the protection against antiretroviral drug-induced sperm-endocrine aberrations and testicular toxicity: A review. Reprod Toxicol 2024:108629. [PMID: 38825169 DOI: 10.1016/j.reprotox.2024.108629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 05/27/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
The introduction of highly active antiretroviral therapy (HAART) has revolutionized the treatment of HIV/AIDS worldwide. The HAART approach is the combination of two or more antiretroviral drugs of different classes and are responsible for patient's survival and declining death rates from HIV/AIDS and AIDS-related events. However, the severe and persistent reproductive side effect toxicity of HAART regimens is of great concern to patients within the reproductive age. Till date, the underlying pathophysiology of the HAART-induced reproductive toxicity remain unraveled. Nevertheless, preclinical studies show that oxidative stress and inflammation may be involved in HAART-induced sperm-endocrine deficit and reproductive aberrations. Studies are emerging demonstrating the efficacy of plant-based and non-plant products against the molecular alterations and testicular toxicity of HAART. The testicular mechanisms of mitigation by these products are associated with enhancement of testicular steroidogenesis, spermatogenesis, inhibition of oxidative stress and inflammation. This review presents the toxic effects of HAART on spermatogenesis, reproductive hormones and testis integrity. It also provides insights on the molecular mechanisms underlying the mitigation of HAART testicular toxicity by plant-based and non-plant agents. However, effect of repurposing clinical drugs to combat HAART toxicity is unknown, and more mechanistic studies are evidently needed. Altogether, plant-based and non-plant products are potential agents for prevention of rampant endocrine dysfunction and testicular toxicity of HAART.
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Affiliation(s)
- Roland E Akhigbe
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria; Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
| | - Tunmise M Akhigbe
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria; Breeding and Genetics Unit, Department of Agronomy, Osun State University, Ejigbo Campus, Osun State, Nigeria
| | - Precious A Oyedokun
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria; Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
| | - Ademola C Famurewa
- Department of Medical Biochemistry, Faculty of Basic Medical Sciences, College of Medical Sciences, Alex Ekwueme Federal University, Ndufu-Alike Ikwo, Ebonyi State, Nigeria.
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Bibha K, Akhigbe TM, Hamed MA, Akhigbe RE. Metabolic Derangement by Arsenic: a Review of the Mechanisms. Biol Trace Elem Res 2024; 202:1972-1982. [PMID: 37670201 DOI: 10.1007/s12011-023-03828-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/21/2023] [Indexed: 09/07/2023]
Abstract
Studies have implicated arsenic exposure in various pathological conditions, including metabolic disorders, which have become a global phenomenon, affecting developed, developing, and under-developed nations. Despite the huge risks associated with arsenic exposure, humans remain constantly exposed to it, especially through the consumption of contaminated water and food. This present study provides an in-depth insight into the mechanistic pathways involved in the metabolic derangement by arsenic. Compelling pieces of evidence demonstrate that arsenic induces metabolic disorders via multiple pathways. Apart from the initiation of oxidative stress and inflammation, arsenic prevents the phosphorylation of Akt at Ser473 and Thr308, leading to the inhibition of PDK-1/Akt insulin signaling, thereby reducing GLUT4 translocation through the activation of Nrf2. Also, arsenic downregulates mitochondrial deacetylase Sirt3, decreasing the ability of its associated transcription factor, FOXO3a, to bind to the agents that support the genes for manganese superoxide dismutase and PPARg co-activator (PGC)-1a. In addition, arsenic activates MAPKs, modulates p53/ Bcl-2 signaling, suppresses Mdm-2 and PARP, activates NLRP3 inflammasome and caspase-mediated apoptosis, and induces ER stress, and ox-mtDNA-dependent mitophagy and autophagy. More so, arsenic alters lipid metabolism by decreasing the presence of 3-hydroxy-e-methylglutaryl-CoA synthase 1 and carnitine O-octanoyl transferase (Crot) and increasing the presence of fatty acid-binding protein-3 mRNA. Furthermore, arsenic promotes atherosclerosis by inducing endothelial damage. This cascade of pathophysiological events promotes metabolic derangement. Although the pieces of evidence provided by this study are convincing, future studies evaluating the involvement of other likely mechanisms are important. Also, epidemiological studies might be necessary for the translation of most of the findings in animal models to humans.
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Affiliation(s)
- K Bibha
- Department of Zoology, Magadh Mahila College, Patna University, Patna, India
| | - T M Akhigbe
- Breeding and Plant Genetics Unit, Department of Agronomy, Osun State University, Osogbo, Osun State, Nigeria
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
| | - M A Hamed
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
- Department of Medical Laboratory Science, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
- The Brainwill Laboratory, Osogbo, Osun State, Nigeria
| | - R E Akhigbe
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria.
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria.
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Havlickova K, Snopkova S, Pohanka M, Svacinka R, Vydrar D, Husa P, Zavrelova J, Zlamal F, Fabianova L, Penka M, Husa P. Oxidative stress, microparticles, and E-selectin do not depend on HIV suppression. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2024. [PMID: 38390755 DOI: 10.5507/bp.2024.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Oxidative stress and inflammation are considered predictors of diseases associated with aging. Markers of oxidative stress, inflammation, and endothelial activation were investigated in people with HIV on antiretroviral treatment to determine whether they had an immunosenescent phenotype that might predispose to the development of premature age-related diseases. PATIENTS AND METHODS This study was conducted on 213 subjects with HIV. The control groups consisted of healthy HIV-negative adults. The level of oxidative stress was measured by assessing the production of malondialdehyde levels, which were detected by thiobarbituric acid reactive substance (TBARS) assay. The level of microparticles indicated the presence of inflammation and endothelial activation was measured by E-selectin levels. Significant differences were determined by appropriate statistical tests, depending on the distribution of variables. Relationships between continuous variables were quantified using Spearman's rank correlation coefficient. RESULTS TBARS, and microparticle and E-selectin levels were significantly higher in untreated and treated subjects with HIV compared with HIV-negative controls (P<0.001). The levels of the investigated markers were not significantly different between untreated and treated patients and no significant correlation of these markers was found with CD4+ count, CD4+/CD8+ ratio, and the number of HIV-1 RNA copies. CONCLUSIONS Elevated markers of oxidative stress, inflammatory and endothelial activation were independent of the virologic and immunologic status of people with HIV. These results support the hypothesis that residual viremia in cellular reservoirs of various tissues is a key factor related to the premature aging of the immune system and predisposition to the premature development of diseases associated with aging.
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Akhigbe RE, Hamed MA, Odetayo AF, Akhigbe TM, Oyedokun PA. Zinc improves sexual and erectile function in HAART-treated rats via the upregulation of erectogenic enzymes and maintenance of redox balance. Aging Male 2023; 26:2205517. [PMID: 37144473 DOI: 10.1080/13685538.2023.2205517] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/06/2023] Open
Abstract
PURPOSE HAART has been shown to impair sexual function and penile erection via perturbation of penile redox balance, while zinc has been established to exert antioxidant activity. Therefore, this study focused on the role and associated molecular mechanism of zinc in HAART-induced sexual and erectile dysfunction. MATERIALS AND METHODS Twenty male Wistar rats were randomly grouped into four (n = 5 rats per group); the control, zinc-treated, HAART-treated, and HAART + zinc-treated groups. Treatments were per os daily for eight weeks. RESULTS Zinc co-administration significantly improved HAART-induced increase in the latencies of mount, intromission, and ejaculations. Zinc also attenuated HAART-induced reduction in the motivation to mate, penile reflex/erection, and frequencies of mount, intromission, and ejaculations. In addition, zinc co-treatment improved HAART-induced decline in penile NO and cGMP, dopamine, and serum testosterone. More so, zinc prevented HAART-induced rise in penile activities of monoamine oxidase, acetylcholinesterase, phosphodiesterase-5, and arginase. Furthermore, concomitant treatment with zinc ameliorated HAART-induced penile oxidative stress and inflammation. CONCLUSION In conclusion, our present findings show that zinc improves sexual and erectile function in HAART-treated rats by upregulating erectogenic enzymes via the maintenance of penile redox balance.
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Affiliation(s)
- R E Akhigbe
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
| | - M A Hamed
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
- Department of Medical Laboratory Science, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
- The Brainwill Laboratories and Biomedical Services, Osogbo, Osun State, Nigeria
| | - A F Odetayo
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
- Department of Physiology, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - T M Akhigbe
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
- Department of Agronomy, Osun State University (Ejigbo Campus), Osogbo, Nigeria
| | - P A Oyedokun
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
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Afolabi OA, Hamed MA, Anyogu DC, Adeyemi DH, Odetayo AF, Akhigbe RE. Atorvastatin-mediated downregulation of VCAM-1 and XO/UA/caspase 3 signaling averts oxidative damage and apoptosis induced by ovarian ischaemia/reperfusion injury. Redox Rep 2022; 27:212-220. [PMID: 36200598 PMCID: PMC9553180 DOI: 10.1080/13510002.2022.2129192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background Oxidative damage is critical in the pathogenesis of ovarian ischaemia/reperfusion (I/R) injury, and statins have been reported to exert antioxidant activity. However, the role of VCAM-1 and xanthine oxidase (XO)/uric acid (UA) in ovarian I/R injury is not known. Also, whether or not atorvastatin exerts antioxidant activity like other statins is unclear. Objectives This study investigated the involvement of VCAM-1 and XO/UA in ovarian I/R injury and the likely protective role of atorvastatin. Methods Forty female Wistar rats were randomized into sham-operated, ischaemia, ischaemia/reperfusion (I/R), ischaemia and atorvastatin, and I/R and atorvastatin. Results In comparison with the sham-operated group, atorvastatin blunted ischaemia and I/R-induced distortion of ovarian histoarchitecture and follicular degeneration. Also, atorvastatin alleviated ischaemia and I/R-induced rise in XO, UA, and malondialdehyde, which was accompanied by inhibition of ischaemia and I/R-induced reductions in reduced glutathione level, enzymatic antioxidant activities and increase in myeloperoxidase activity and TNF-α and IL-6 levels by atorvastatin treatment. Additionally, atorvastatin blocked ischaemia and I/R-induced increase in VCAM-1 expression, caspase 3 activity, 8-hydroxydeoxyguanosine level and ovarian DNA fragmentation index. Conclusion For the first time, this study revealed that atorvastatin-mediated downregulation of VCAM-1 and XO/UA/caspase 3 signaling averts oxidative injury, inflammation, and apoptosis induced by ovarian ischaemia/reperfusion injury.
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Affiliation(s)
- O A Afolabi
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - M A Hamed
- Brainwill Laboratories, Osogbo, Nigeria.,Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Nigeria
| | - D C Anyogu
- Department of Veterinary Pathology and Microbiology, University of Nigeria, Nsukka, Nigeria
| | - D H Adeyemi
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Osun State University, Osogbo, Nigeria
| | - A F Odetayo
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Nigeria.,Department of Physiology, University of Ilorin, Ilorin, Nigeria
| | - R E Akhigbe
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.,Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Nigeria
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Zinc normalizes hepatic lipid handling via modulation of ADA/XO/UA pathway and caspase 3 signaling in highly active antiretroviral therapy-treated Wistar rats. Chem Biol Interact 2022; 368:110233. [DOI: 10.1016/j.cbi.2022.110233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/17/2022] [Accepted: 10/21/2022] [Indexed: 11/23/2022]
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Factors Influencing Survival Status of HIV/AIDS after HAART in Huzhou City, Eastern China. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2022; 2022:2787731. [PMID: 36249590 PMCID: PMC9560853 DOI: 10.1155/2022/2787731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/21/2022] [Indexed: 11/05/2022]
Abstract
Background Highly active antiretroviral therapy (HAART) can effectively reduce the risk of death and opportunistic infections in patients with HIV/AIDS. The aim of this study was to analyse the survival status and its influencing factors in HIV/AIDS after HAART. Methods The data on patients' sociodemographic characteristics, treatment information, and follow-up results from the Information Management System of the Chinese Center for Disease Control and Prevention were obtained. Bivariate and stepwise multivariate Cox proportional hazards regression model analyses were performed. Results A total of 1812 participants were included in this study, of which 1716 were still alive (survival group) and 96 had died (death group). The results indicated that respondents who were elderly (HR = 1.053, 95% CI: 1.037–1.069, P < 0.01), who had heterosexual transmission (HR = 2.422, 95% CI: 1.314–4.465, P < 0.01) and whose current WHO clinical stage was stage III or IV (HR = 2.399, 95% CI: 1.215–4.735, P < 0.05) were more likely to have died; respondents whose baseline CD4+ T-lymphocyte count was equal to or more than 200 cells/μL (HR = 0.412, 95% CI: 0.275–0.616, P < 0.05) were unlikely to have died. Conclusions It is recommended that HAART be provided to HIV/AIDS patients at an early clinical stage and that the health services for HIV/AIDS patients after taking medicines be strengthened, which will help promote adherence to therapeutic regimens and improve quality of life.
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Afolabi OA, Anyogu DC, Hamed MA, Odetayo AF, Adeyemi DH, Akhigbe RE. Glutamine prevents upregulation of NF-kB signaling and caspase 3 activation in ischaemia/reperfusion-induced testicular damage: An animal model. Biomed Pharmacother 2022; 150:113056. [PMID: 35658227 DOI: 10.1016/j.biopha.2022.113056] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/26/2022] [Accepted: 04/26/2022] [Indexed: 11/02/2022] Open
Abstract
AIM Testicular ischaemia/reperfusion (I/R) injury is a major consequence of testicular torsion with possible attendant risk of male infertility. Glutamine, on the other hand, is a known antioxidant with anti-inflammatory potential. The present study evaluated whether or not glutamine would improve I/R-induced testicular injury in torsion/detorsion (T/D). The possible associated mechanisms were also investigated. METHODS Wistar rats were randomly allotted into four groups (n = 10); sham-operated, glutamine-treated, T/D, and T/D + glutamine. Testicular torsion was induced and reperfusion established after two and a half hour under ketamine/xylazine anaethesia. Glutamine was administered one hour before reperfusion and continued daily for 3 days. At the end of the study, animals were euthanized, blood samples obtained, epididymal sperm suspension collected, and the testes harvested for biochemical and histopathological assays using established methods. RESULTS Glutamine prevented T/D-driven I/R-induced reduced sperm quality, impaired testicular histoarchitecture, and suppressed circulating testosterone. Also, glutamine abated I/R-induced oxidative stress (evidenced by reduced hydrogen peroxide and MDA generation and enhanced concentrations and activities of antioxidants), inflammation (evidenced by suppression of TNF-α and IL-1β), and apoptosis (evidenced by reduced DNA fragmentation) by down-regulating NF-kB and caspase 3 activity. CONCLUSION For the first time, this study demonstrated that glutamine administration improved testicular I/R injury in T/D rat model by maintaining testicular redox balance, and testicular integrity and function via inhibition of I/R-induced upregulation of NF-kB signaling and caspase 3 activation.
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Affiliation(s)
- O A Afolabi
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - D C Anyogu
- Department of Veterinary Pathology and Microbiology, University of Nigeria, Nsukka, Nigeria
| | - M A Hamed
- Brainwill Laboratories, Osogbo, Osun State, Nigeria; Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
| | - A F Odetayo
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria; Department of Physiology, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - D H Adeyemi
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, University, Osun State, Nigeria
| | - R E Akhigbe
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria; Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria.
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Hamed MA, Akhigbe TM, Akhigbe RE, Aremu AO, Oyedokun PA, Gbadamosi JA, Anifowose PE, Adewole MA, Aboyeji OO, Yisau HO, Tajudeen GO, Titiloye MM, Ayinla NF, Ajayi AF. Glutamine restores testicular glutathione-dependent antioxidant defense and upregulates NO/cGMP signaling in sleep deprivation-induced reproductive dysfunction in rats. Pharmacotherapy 2022; 148:112765. [PMID: 35247715 DOI: 10.1016/j.biopha.2022.112765] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/19/2022] [Accepted: 02/27/2022] [Indexed: 12/14/2022]
Abstract
Oxidative stress has been linked with sleep deprivation (SD)-induced pathological conditions and reproductive dysfunction. On the other hand, glutamine has been established to have antioxidant property. However, the impact of SD, with or without glutamine, on male reproductive function is yet to be elucidated. Thus, this study was designed to investigate the role of SD, with or without glutamine, on male reproductive function and possible associated mechanisms. Ten-week old male Wistar rats weighing 175.6 g± 0.42 were randomly assigned into vehicle that received per os (p.o.) distilled water, glutamine (1 g/kg; po), SD, and SD + glutamine that received treatments as glutamine and SD. Treatment/exposure lasted for 72 h. The results showed that SD led to reduced body weight, seminiferous luminal and epididymal sperm density, low sperm quality, increased testicular and epididymal malondialdehyde, uric acid, DNA fragmentation, and testicular injury markers. In addition, SD caused a reduction in reduced glutathione level and activities of superoxide dismutase, catalase, glucose-6-phosphate dehydrogenase, glutathione peroxidase, and glutathione-S-transferase. Also, SD increased tumor necrotic factor-α, interleukin-1β, and nuclear factor-kappa B levels. Furthermore SD led to impaired libido and erectile dysfunction, and suppression of circulatory nitric oxide, gonadotropins and testosterone, and penile cGMP. However, glutamine attenuated the effects induced by SD. Taken together, the findings of this study demonstrate that SD induces reproductive dysfunction via glutathione-dependent defense depletion and down-regulation of NO/cGMP signaling, which was abolished by glutamine supplementation.
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Affiliation(s)
- M A Hamed
- Brainwill Laboratories and Biomedical Services, Osogbo, Osun State, Nigeria; Reproductive Biology and Toxicology Research Laboratories, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
| | - T M Akhigbe
- Reproductive Biology and Toxicology Research Laboratories, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria; Department of Agronomy, Osun State University, Osun State, Nigeria
| | - R E Akhigbe
- Reproductive Biology and Toxicology Research Laboratories, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria; Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.
| | - A O Aremu
- Reproductive Biology and Toxicology Research Laboratories, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria; Department of Morbid Anatomy, Obafemi Awolowo University Teaching Hospital Complex (OAUTHC), Ile-Ife, Osun State, Nigeria
| | - P A Oyedokun
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - J A Gbadamosi
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - P E Anifowose
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - M A Adewole
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - O O Aboyeji
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - H O Yisau
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - G O Tajudeen
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - M M Titiloye
- Igbinedion University, Okada, Edo State, Nigeria
| | - N F Ayinla
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - A F Ajayi
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria; Department of Morbid Anatomy, Obafemi Awolowo University Teaching Hospital Complex (OAUTHC), Ile-Ife, Osun State, Nigeria
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